/*
 * 上应小风筝  便利校园，一步到位
 * Copyright (C) 2022 上海应用技术大学 上应小风筝团队
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import 'package:dio/dio.dart';
import 'package:kite/module/activity/using.dart';

import '../../../backend.dart';

class OcrRecognizeException implements Exception {
  final int code;
  final String msg;

  const OcrRecognizeException(this.code, this.msg);
}

class OcrServer {
  static const _ocrServerUrl = '${Backend.kite}/api/ocr/captcha';

  static Future<String> recognize(String imageBase64) async {
    final response = await Dio().post(_ocrServerUrl, data: imageBase64);
    final result = response.data;
    final code = result['code'];
    if (code == 0) {
      return result['data'];
    } else {
      throw OcrRecognizeException(code, result['msg']);
    }
  }
}
